feat：单个文件的upload接口以及save接口

app/controller/add_file_route.py

@@ -0,0 +1,106 @@
+import asyncio
+import os.path
+from typing import List
+
+from fastapi import FastAPI, UploadFile, Form
+
+from app.config.env import env
+from app.model.FileModel import FileSaveService
+from app.utils.db_utils import AsyncSessionDep
+from app.utils.path_join import path_join
+
+
+def add_file_route(app: FastAPI):
+  async def _save_file(
+    session: AsyncSessionDep,
+    file: UploadFile,
+    body: dict,
+  ):
+    filename = file.filename
+    return await FileSaveService.saveFile(
+      session=session,
+      file=file,
+      filename=filename,
+      id=body.get('id', None),
+      file_record=body,
+    )
+
+  async def _save_file_list(
+    session: AsyncSessionDep,
+    file_list: List[UploadFile],
+    body: dict,
+  ):
+    async_task_list = [asyncio.create_task(
+      FileSaveService.saveFile(
+        session=session,
+        file=item,
+        filename=item.filename,
+        file_record=body,
+      )
+    ) for item in file_list]
+    result_list = await asyncio.gather(*async_task_list)
+    return {"result": result_list}
+
+  async def _delete_file(row_dict: dict):
+    file_public_path = row_dict.get('path')
+    path_list: List[str] = file_public_path.split('/')
+    original_name = path_list.pop()
+    file_id = path_list.pop()
+    save_file_path = path_join(env.file_save_path, file_id, original_name)
+
+    # 删除文件
+    try:
+      os.remove(save_file_path)
+    except FileNotFoundError:
+      print("文件不存在:" + save_file_path)
+
+    # 删除文件夹
+    save_dir_path = path_join(env.file_save_path, file_id)
+    try:
+      os.rmdir(save_dir_path)
+    except FileNotFoundError:
+      print("文件夹不存在:" + save_dir_path)
+
+    return {"result": True}
+
+  @app.post('/save_file')
+  async def save_file(
+    file: UploadFile,
+    session: AsyncSessionDep,
+    head_id: str = Form(default=None, description="父对象id"),
+    attr1: str = Form(default=None, description="扩展属性1"),
+    attr2: str = Form(default=None, description="扩展属性2"),
+    attr3: str = Form(default=None, description="扩展属性3")
+  ):
+    return await _save_file(session, file, {
+      "head_id": head_id,
+      "attr1": attr1,
+      "attr2": attr2,
+      "attr3": attr3
+    })
+
+  @app.post('/upload_file')
+  async def save_file(
+    file: UploadFile,
+    session: AsyncSessionDep,
+    head_id: str = Form(default=None, description="父对象id"),
+    attr1: str = Form(default=None, description="扩展属性1"),
+    attr2: str = Form(default=None, description="扩展属性2"),
+    attr3: str = Form(default=None, description="扩展属性3")
+  ):
+    print("file", file)
+    print("head_id", head_id)
+    print("attr1", attr1)
+    print("attr2", attr2)
+    print("attr3", attr3)
+
+    result = await _save_file(session, file, {
+      "head_id": head_id,
+      "attr1": attr1,
+      "attr2": attr2,
+      "attr3": attr3
+    })
+    if 'result' in result:
+      print(f"upload_file:自动删除文件「{result['result']['path']}」")
+      await _delete_file(result['result'])
+    return result

app/model/FileModel.py

@@ -0,0 +1,70 @@
+import datetime
+from pathlib import Path
+
+from fastapi import UploadFile
+from sqlmodel import Field
+
+from app.config.env import env
+from app.model.BasicModel import BasicModel
+from app.utils.create_module_service import create_model_service
+from app.utils.db_utils import AsyncSessionDep
+from app.utils.next_id import next_id
+from app.utils.path_join import path_join
+
+
+class FileModel(BasicModel, table=True):
+  __tablename__ = "pl_upload"
+
+  name: str = Field(default=None, description='文件名称')
+  path: str = Field(default=None, description='文件路径')
+  head_id: str = Field(default=None, description='父对象id')
+  attr1: str = Field(default=None, description='扩展属性1')
+  attr2: str = Field(default=None, description='扩展属性2')
+  attr3: str = Field(default=None, description='扩展属性3')
+
+
+FileService = create_model_service(Cls=FileModel)
+
+
+# 文件保存服务
+class FileSaveService:
+  # 将文件保存到服务本地目录
+  # 并且往附件表中插入对应的文件记录
+  @staticmethod
+  async def saveFile(
+    session: AsyncSessionDep,
+    file: UploadFile,
+    filename: str,
+    id: str = None,
+    file_record: dict = None,
+  ):
+    if not id:
+      id = await next_id()
+
+    datetime_string = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
+    file_id = f"{datetime_string}_{id}"
+
+    save_path = path_join(env.file_save_path, file_id).replace('\\', '/')
+    print("save_path", save_path)
+
+    public_path = path_join(env.file_public_path, file_id).replace('\\', '/')
+    print("public_path", public_path)
+
+    # parents=True 表示创建所有不存在的父目录
+    # exist_ok=True 表示如果目录已存在不抛出异常
+    Path(save_path).mkdir(parents=True, exist_ok=True)
+
+    file_save_path = path_join(save_path, filename)
+    file_public_path = path_join(public_path, filename)
+
+    with open(file_save_path, 'wb') as f:
+      f.write(await file.read())
+
+    file_dict = {
+      "id": id,
+      "name": filename,
+      "path": file_public_path,
+      **file_record,
+    }
+    file_cls = await FileService.item_insert(session=session, row_dict=file_dict)
+    return {"result": file_cls.model_dump()}

app/server.py

@@ -6,6 +6,7 @@ from langserve import add_routes
 
 from app.config.env import env
 from app.controller.add_approve_route import add_approve_route
+from app.controller.add_file_route import add_file_route
 from app.controller.add_hotel_route import add_hotel_route
 from app.controller.add_langgraph_approve_route import add_langgraph_approve_route
 from app.controller.add_langgraph_chat_route import add_langgraph_chat_route
@@ -60,6 +61,7 @@ add_langgraph_chat_route(app)
 add_approve_route(app)
 add_reimburse_route(app)
 add_hotel_route(app)
+add_file_route(app)
 
 
 @app.get("/get_env")

app/utils/path_join.py

@@ -0,0 +1,6 @@
+import os
+from typing import List
+
+
+def path_join(*pat_list: List[str]):
+  return os.path.join(*pat_list).replace('\\', '/')